condition mean min max ZT0-3 0.04218123333333333 0.02128905 0.06288415 ZT4-7 0.05936375000000001 0.05936375000000001 0.05936375000000001 ZT8-11 0.0205186 0.0205186 0.0205186 ZT12-15 0.03169445 0.0 0.0633889 ZT16-19 0.05823105 0.05823105 0.05823105 ZT20-23 0.0224323 0.0224323 0.0224323